A novel method for ternary polarization-hologram storage was presented, and the model of ternary optical memory based on the photoinduced anisotropy of indolylfulgide/PMMA film was constructed to store 3-state line-polarized beam for ternary optical computer. Using He-Ne laser as recording and readout beam and coder/decoder of ternary optical computer as data input/output element, ternary digital optical signal was recorded on indolylfulgide/PMMA film by Fourier transform holographic method. The memory can store directly ternary information denoted by cross-polarized and non-light states, and may realize page addressing and parallel read-write. The experiment result of one-bit ternary polarization-hologram digital storage with indolylfulgide demonstrates the method is feasible.